Improvement in envelope-fasteners



MAX MANUEL BEROLZHEIMER, 0F NEW YORK, N. Y.

Letters Patent No.` 102,211, dated April 26, 1870.

IMPRO VEMN T IN ENVELOPE-FA'STENERS.

The Schedule referred to in these Letters P'atent and making part of theBarre To all whom il may concern.-

Be'it known that I, MAX EMANUEL BnnoLzHnr- MR, of the city, county, andState Ot' New York, have invented a new and useful Envelope-Fastener;-land I hereby declare t lat the. following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawingsmaking a part ot' this specilicatiou, and the letters of referencemarked thereon, in which the saine letter represents the same thing ineach figure.

The object of my invention is to secure envelopes and other articlesmade of paper or other material, capable ot' easy perforation, frombeing opened and liavility toabstraetion of contents without detection.

Figure 1 is a plan of the exterior disk.

Figure 2 is a plan 0t` the interior disk.

Figure 3, a side view thereof.

Figure 4, an envelope with the disks attached.

Figure' 5 is a cross-section ot' the exterior disk.

A 'relin'esents the exterior disk of the fastener;

B, the interior disk;

C C, the teeth ot' the interior; alu

D D, the holes corresponding therewith in exterior disk A.

The operation is ns follows:

Place disk B beneath the under surface of an euvelope, so that eachtooth will come within-one otl the four divisions, and press themsuttlciently upon the teeth, to insure perforation.

Place disk A upon the elastic teeth, and by aslght lt will be seen that,owing to the peculiar l'orm and construction ot' the exterior disk, whenthe two disks are applied to an envelope 4and attached together, asdescribed, the teeth are entirely concealed, and cannot be reached foi'the purpose ot' det-aching them fronrthe exterior disk, without cuttingor breaking the metal ot' said exterior disk.. t

What I claim, and desire to secure by Letters Patent, is-' The fasteningdevice described, consisting ot' two parts A B, one toothed and theother correspondingly perforated, constructed substantiall y asdescribed, and to operate together as and for the purposes specified.

MAX E. BEROLZHEIMER.

Witnesses S. J. GORDON, WM. T. WILLIS.

